Sounds like you friend needs to get another opinion. If she is under WC, she might have some problems in doing that.
Has she hired a WC attorney? If not, and she is being forced to see WC doctors only, then she needs a WC attorney to work for her and her only.
This will help to get her the care that she needs, including another opinion.
There should be some sign of improvement by now and another opinion is now warranted.
Fran